Fush-box.



' E. SHERWOQDJ wsmox. APPLIOA TIONTILED MAY 18, 1908.:

929,506.. Patented July 27, 1909.

. matically swing UNITED STATES PATENT OFFICE. I

' EARL SHERWOOD, OF HONESDALE'PENNSYLVANIA.

FUSI BOX.

Specification of Petters Patent.

Patented July 27, 1909.

Application filed May 18, 1908. Serial No. 433,490.

To all whom it may concern:

Be it known that l, EARL Snnavoon, a citizen of the United States, residing at Honesdale, inthe county of \Vayne and State of Pennsylvania, have'im'ented a certain new and useful Fuse-Box, of which the following is a specification, reference being had therein to the accompanying drawing.-

This invention relates to fuse boxes, the object of 'the invention beingto provide a simple, cheap and practical fuse box including meansfor holding the fuse and also a fuse of novel construction so L .nbined with the fusehol ders that when the fuse is burned a in two, the separated parts of the'fuse auto downward by gravity away I from each other being assisted iii this operation by the expl osion occurri11ig,.-at the time the separation takes place betwren the parts of the fuse, such se' aration between the parts of the fuse avoi ing the objectionable arcing of the current across the space between the broken and separated portions of the fuse.

A further object of the invention is to provide means-for giving a contact of large superficial area to the terminal portions of the fuse; also means for holding the fuse under tension and preventing the accidental dislodgment thereof.

A further object of the invention is to do away with the objectionable arcing, incident to the use of fixed fuses and other fuses which are thrown apart by springs or other ap )liances. v

Vith the above and other objects in View, the nature of which will more fully appear as the description 1proceeds, the invention consists in the nove construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings :Figure 1 is a front elevation-of a fuse box embodying the present invention with the front or cover thereofrcmoved to show the internal construction. Fig. 2 is a detail perspective view of one of the fuse holders. Fig. 3 is .a plan view of the central portion of the fuse. Fig. 4 is an edge view of the fuse.

Fig. 5 is a vertical cross section through the fuse box, showing a modified form of ten- SlOIYdCVlC. Fig. (3 is a detail perspective view of the tension device illustrated in The fuse which forms part of this invention consists-of, an oblong strip of metal of v 'ductor opening 12 and provided .good

the extremities of the strip being bent around to form open rolls or hooks 1 while the central portion of the strip is deflected to the same side-as the rolls 1 to form a V- shaped offset or downward extension 2 which causes tension and firm contact of the fuse with the holders and the vertex of said deflected portion is weakened preferably .by forming notches 3 in the opposite edges thereof as shown in Figs. 3 and t, or other meansfor weakening the fuse at the central point, thereby forming a breaking ora fusing point which induces the breakage or fusing of the device at the middle point in the length of the fuse. The V -shaped deflected portion 2 also establishes "downwardly converging faees so that when the fuse burns out and the explosion incident thereto takes electrical conductivity such as copper,

place,,the force of the explosion between the Y downwardly diver ing portions 2 throws the separated ends 0 the fuselviolently away from each other and assisted by gravity, the separated portions of the fuse swing own-- ward to a pendent'position on account of the nature of their connection with the holders hereinafter described. Thus the broken end portions of-the fuse hang in a pendent posi-' tion throu h the bottom of the fuse box which is left open for the fuse.

As illustrated in Figs; 1' and 5, the fuse box embodies a back i a top 5 and ends (3,

all of said parts being rigidly connected- The fuse box also comprises a front 7 which is provided'with'a hinged section or door 8 adapted to he opened to give access to the interior of the box, to be held closed by a catch 9 of any'suitable description. In each upper corner of the fuse box there is arranged a holder, one of which is illustrated in detail -in' Fig. '2 wherein it is seen to comprise oppositely arranged clamping jaws 10 and ll'connected integrally together at one side of the (1011' at the opposite side of said openingwith lugs 13 which receive a clamp 14:, which may be in the form of a. belt or screw whereby the end of the conductor may be firmly clamped in the holder. The holder is also provided with attaching lu s 15 and 16 to receive fasteners by which the holder is secured to the inside of the box in the corner thereof, as shown in Fig. 1. Each holder is also provided with a pendent arm or foot l7. and projecting outwardly from said foot a the cover being adapted pin 18 adapted to receive one of the terminal hooks or rolls at the end of the fuse above described. Below the pin or stud 18 the arm is provided with a forwardly extending flange 19 having an arcuate or curvilinear face 20 against which a portion of the fuse is adapted to bear fiatwise after passing the hook or roll 1 around the pin or stud 18. It will also be observed thatthe pin or stud 18 is made slightly tapering gradually increasing in size toward the base thereof, so that the heck of the fuse is forced inward over the pin "18, it is bound tightly around the said. pin or'stud, thereby insuring close and continuous contact be tween the fuse and said pin or stud. Also the portion of the fuse adjacent to the hook 1 is caused to bear firmly against the curvilinear face 20 of the flange 19.

While the fuse box hereinafter described is completely illustrated and described in its complete form, heretofore, itmay be desirable in some instances to employ a tension device to more securely hold the fuse in position. In such event, I may use the tension device shown in Fig. 1 as consisting of a bar 21 of non-conducting material having a jointed connection at 22 with the inside of the box and provided with a foot or enlargement 23 adapted to bear against the upper side of the fuse when swung downward shown in Fig. 1. The tension bar 21 may be readily swung upward. on its jointed c0n-- nection with the fuse box to admit of the application of a new fuse whenever necessary.

Instead of the tension device illustrated in Fig. 1, I may use another form oftension. device as shown in Figs. 5 and 6 consisting of a body 24 of non-conducting malerial having diverging arms 25 which are adapted to bear on top of the fuse when the hinged section or door 8 of the box is closed as shown in Fig. 5, the tension device shown. in Fig. (3 being fastened to the inner side of the door 8 so as to swing therewith. Therefore, when the door is closed as shown in Fig. 5, the arms '22:) of the tension device swing inward and downward until they rest upon or against the upper side of the fuse.

From the foregoing desc 'ptiou it will be understood that when the fuse is burned in two, the separated portions thereof swing downward by gravity and hang in a pendent position from their respective holders, such downward movement being assisted by the impact of the explosion which takes place of bent into the form of hooks, and an m.

tcrmediate portion thereof deflected to form downwardly converging faces, substantially as and for the purpose specified. 22 In a fuse box, a fuse consisting of a metal strip having the opposite ends thereof formed into hooks, andau intermediate portion thereof formed with a V -shaped downward offset which is centrally weakened, substantially as and for the purpose speelfied.

3. In a fuse box, a fuse holder comprising means for engaging the conductor, a pin or stud for holding one end of the fuse, and a flange for engaging a portion of the fuse adjacent to that portion engaged by the pin or stud.

4. In a fuse hon, a fuse holder comprising and a. flange arranged adjacent to said stud and provided with a curvilinear face adapted for contact with a portion of the fuse adjacent to that portion engaging the pin or stud.

5. In a fuse box, a fuse holder embodying a tapering pin or stud for engaging one end of a fuse, and a flange or shoulder adjacent to said stud adapted to engage a portion of the fuse adjacent to that portion engaged by the pin or stud, the arrangement being such that the fuse passes between the pin or stud and said shoulder, substantially as described.

6. In a fuse box, the combination with oppositely arranged fuse holders, of a fuse adapted to terminally engage said holders, and a pivoted and swinging tension device a pin or stud for engaging one end of a fuse,

b'earing against the fuse at a point iuterlflAlt-L SHERWOOD.

'W i tnesscs ll. 1 IIOWARD, J12, Gno. C. Ross; 

